| Labetalol Hydrochloride |
| Lactitol hydrate |
| Lactulose* |
| Lafutidine |
| Lamivudine |
| Lanatoside C* |
| Lanoconazole |
| Lansoprazole |
| Latamoxef Sodium* |
| Latanoprost |
| Lenampicillin Hydrochloride |
| l-Leucine* |
| Levallorphan Tartrate* |
| Levobunolol Hydrochloride |
| Levocabastine Hydrochloride |
| Levocarnitine Chloride |
| Levodopa* |
| Levofloxacin |
| Levofolinate Calcium |
| Levomepromazine Hydrochloride |
| Levomepromazine Maleate* |
| Levothyroxine Sodium* |
| Lidocaine* |
| Limaprost Alfadex |
| Lincomycin Hydrochloride* |
| Linezolid |
| Liothyronine Sodium* |
| Liranaftate |
| Lisinopril |
| Lisuride Maleate |
| Lobenzarit Disodium |
| Lofepramine Hydrochloride |
| Lomefloxacin Hydrochloride |
| Lomerizine Hydrochloride |
| Loperamide Hydrochloride |
| Lorazepam* |
| Lormetazepam |
| Lornoxicam |
| Loxoprofen Sodium* |
| Lysine Hydrochloride* |